CNC Night

Tonight we had our 4th CNC night. We rebuilt the Y axis of the proxxon mf70 mini mill we’ve been converting using a 3d printed bubblegumcnc kit. After building the axis, We hooked up our GRBL shield and managed to get the machine moving the X and Y axes properly under its own power.  We […]

Prototype lifter arm

I added a prototype lifter arm to my robot yesterday. It needs re-doing (it’s unreliable and heavy) but it works for now. I’m using a new motor driver circuit for it as I burned out the SN754410 motor driver I was using, the lifter motor seems to peak briefly at about 1.5 amps when starting to […]